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1010ENFM-3B
Section 2
Move the cursor to the desired display scale by pressing
To register selection press
2.6.6 ENERGY RESOLUTION
The flowmeter assigns multiplier prefixes for the energy total units you selected (e.g., MBTU). It provides
three resolution (or capacity) levels. Therefore, actual Totalizer display units depend on the selected
multiplier. Check the total units by accessing the [Energy Total Scale] menu cell.
If you use the totalizer (TOTCNT) relay output, take into account:
a) The TOTCNT relay output pulses at a maximum rate of .5 pulses per sec. (.5 Hz).
b) The meter sends a totalizer output pulse for every advance of the rightmost visible totalizer digit.
It is possible for a high energy rate to persist long enough to exceed the relay output’s .5 Hz rate. If this
occurs, the meter will store excess pulses in an overflow buffer, and route them back to the relay when
the flow rate drops enough to allow the TOTCNT output to catch-up. Exceeding the .5 Hz rate for long
periods could cause an excessive accumulation of buffered pulses and continue to trip the relay after the
flow rate lessens, or even stops. If this occurs, the meter will be unable to indicate the current energy
total. Therefore, select a resolution to ensure that, even at the maximum expected energy rate, the
TOTCNT pulse will not be activated more than .5 times per second for any appreciable length of time.
Note that resetting the FUE1010EN’s totalizers also clears the overflow buffer.
To change the default resolution:
To access the [Energy Resolution] option list press
Move the cursor to the required resolution by pressing
To store selection press
2.6.7 ENERGY TOTAL MODE
The Totalizer function operates in any of the modes listed below:
ENT
ENT
NETFLOW (default) is best used for applications where there may be zero flow for long periods. NETFLOW
minimizes false Totalizer register increments due to data scatter. Press the <Down Arrow> to accept the
default setting (see paragraph 2.6.1).
MODE FLOW DIRECTION NOTES
POSFLOW positive energy Accumulates energy in positive direction only
NEGFLOW negative energy Accumulates energy in reverse direction only
NETFLOW positive or negative Adds to positive total; subtracts from reverse total
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